Temporal trends in genital warts among individuals covered by the public prescription drug insurance plan in the province of Quebec, Canada, from 1998 to 2007

OBJECTIVE: We assessed temporal trend in the incidence and prevalence of genital warts (GWs) in the province of Quebec, Canada, between 1998 and 2007 as a baseline for future assessment of the impact of Quebec human papillomavirus vaccination program. MATERIALS AND METHODS: Data on GWs were obtained from the linkage of the physician service claims and the public insurance drug plan databases. Genital warts were identified through a prescription of podofilox, a medical procedure code specific to GWs or a diagnosis code for viral warts followed by a prescription of imiquimod or fluorouracil within 2 weeks. An episode was considered incident if it was preceded by a 12-month interval period free of GWs care. RESULTS: During the study period, a total of 27,138 episodes of GWs occurred among 24,267 individuals. The age-standardized incidence rate increased over time in men and women. The highest incidence was observed in women aged 20 to 24 years (391.9/100,000) and in men aged 25 to 29 years (383.3/100,000). Similar trends in prevalence were observed. CONCLUSIONS: The incidence and prevalence of GWs has increased among the population covered by the public insurance drug plan in Quebec.
Authors (Zotero)
Steben, Marc; Ouhoummane, Najwa; Rodier, Caroline; Brassard, Paul
Date (Zotero)
Abril, 2013